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From 41d5020151d21ff0609a4c4173ef2a8ae41f754d Mon Sep 17 00:00:00 2001
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From: rpm-build <rpm-build>
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Date: Tue, 9 May 2017 10:17:42 +0200
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Subject: [PATCH 12/13] Make default capture buffer size bigger.
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---
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tcpdump.c | 9 ++++++++-
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1 file changed, 8 insertions(+), 1 deletion(-)
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diff --git a/tcpdump.c b/tcpdump.c
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index d7b094b..a54a42c 100644
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--- a/tcpdump.c
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+++ b/tcpdump.c
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@@ -130,6 +130,7 @@ The Regents of the University of California. All rights reserved.\n";
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#endif
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static int Bflag; /* buffer size */
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+#define DEFAULT_CAPTURE_BUFFER_SIZE 4*1024*1024
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static long Cflag; /* rotate dump files after this many bytes */
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static int Cflag_count; /* Keep track of which file number we're writing */
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static int Dflag; /* list available devices and exit */
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@@ -1011,7 +1012,13 @@ open_interface(const char *device, netdissect_options *ndo, char *ebuf)
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if (status != 0)
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error("%s: Can't set buffer size: %s",
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device, pcap_statustostr(status));
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- }
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+ } else {
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+ Bflag = DEFAULT_CAPTURE_BUFFER_SIZE;
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+ status = pcap_set_buffer_size(pc, Bflag);
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+ if (status != 0)
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+ fprintf(stderr, "Can't set buffer size to %d, using system default.\n", DEFAULT_CAPTURE_BUFFER_SIZE);
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+ }
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+
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#ifdef HAVE_PCAP_SET_TSTAMP_TYPE
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if (jflag != -1) {
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status = pcap_set_tstamp_type(pc, jflag);
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--
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2.13.5
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